Which item is considered absorbable suture material?

Plain catgut is considered absorbable suture material because it is made from the natural fibers of sheep or goat intestines. This material is designed to be broken down by the body over time, allowing for the sutures to disappear without the need for removal. Absorbable sutures are particularly useful in surgeries where the tissue does not require long-term support, as they provide temporary support while the tissue heals naturally.

The other options, such as silk, nylon, and polyester sutures, are classified as non-absorbable. Silk sutures, while they do have some absorptive characteristics over a long period, are primarily used for their strength and are often left in place unless removed. Nylon and polyester sutures are synthetic materials that do not degrade in the body and are intended for longer-term use, providing robust support for tissues during healing.